Showing Alaska only (incl. its regional partners)All airlines ×

781 nonstop flights · Aug 2025 – Jul 2026 · US DOT on-time records, all US airlines

Leave before 9 am: 93% depart on time. After 4 pm it’s 3 in 4.

Best time to leave 6–7 am 95% arrive on time from STL

Best single flight AS 473 STL 06:02 → SEA 08:30 · 91% on time

Time of day × airport

Share of this route’s flights leaving within 15 minutes, by airport and scheduled departure hour, over Aug 2025 – Jul 2026. Blank: no flights then (or fewer than 40 in the year).

STL

% of this route’s flights leaving within 15 min (small number: flights in the Jun 6 – Jul 31, 2026 schedule): 85+75–8465–7455–64under 55

Pick an hour to see this route’s flights leaving then.

Flights, best and worst

Flights in the Jun 6 – Jul 31, 2026 schedule that ran 150+ times in the year. Times are local. Pick a flight for its history.


AS 473	STL 06:02	SEA 08:30	91%

All 3 Alaska flights in the current schedule

Every flight that flew in the Jun 6 – Jul 31, 2026 schedule, with its record over Aug 2025 – Jul 2026. Times are local. Click a column to sort.


AS 473	STL 06:02	SEA 08:30	4h 28m	321	91%	0.6%	63 min
AS 618	STL 14:50	SEA 17:17	4h 27m	111	87%	0.9%	84 min
AS 647	STL 19:56	SEA 22:24	4h 28m	79	74%	1.3%	37 min

Nonstops by airline and airport

Arriving within 15 minutes, Aug 2025 – Jul 2026. Pick a row to see that airline’s flights on that airport pair.


Alaska	STL	SEA	4h 28m	84%	1.0%	781	Flying now

Flying on a particular day? Pick a date above and the same ranking uses our forecast odds for each flight that day: Tomorrow.

About this data: US DOT on-time records, Aug 2025 – Jul 2026, all US airlines; regional flights count under the airline that sells them. Schedules (which flights and connections exist, and their times) are as of Jun 6 – Jul 31, 2026; seasonal flights outside that window aren’t ranked. Rebuilt monthly. JSON